• More than one-third of the adult population have tertiary (university) education in Canada, the U.S., Japan, and Sweden.
• In Mexico, Portugal, Spain, and Italy, more than half of the adult population have less than upper secondary education.

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NOTE: 2002 for Italy and the Netherlands. The adult population are persons ages 25 to 64. Below upper secondary education is equivalent to less than high school. Upper secondary and post-secondary non-tertiary education is equivalent to high school and also includes trade school. Tertiary education is equivalent to higher education provided by a college or university.

SOURCE: Organization for Economic Cooperation and Development.